Materials Literature
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Al-doped ZnO (AZO) was deposited on an undoped ZnO buffer layer at various deposition temperatures by RF-magnetron sputtering. We controlled the crystal c -axis orientation of AZO using the undoped ZnO buffer layer. With increasing deposition temperature of the undoped ZnO buffer layer, the alignment of the c -axis or…
High-density polyethylene (HDPE)/Mg 2 Al–layered double hydroxide (Mg 2 Al–LDH) nanocomposites with an ethylene-acrylic acid random copolymer (EAA)/Mg 2 Al–LDH master batch were prepared by melt-mixing. The structure of the nanocomposites was characterized by X-ray diffraction (XRD) and transmission electron microscop…
Utilization of a spray-on deposition technique of ferroelectric bismuth titanate (Bi4Ti3O12) composites has a competitive advantage to standard ultrasonic transducers is conforms to non-Euclidean geometries and operates at high temperature (Curie-Weiss temperature 685 °C) and is mechanically coupled to the substrate.…
Material properties of Zircaloy cladding can degrade substantially and threaten the fuel integrity while in nuclear reactor service at elevated temperature. Other than radiation exposure, precipitated hydrides are also shown to be responsible for hydrogen embrittlement of the claddings. A procedure corporate with an e…
The present study is intended to comparatively investigate the changes in microstructure and tensile properties at room and elevated temperatures in commercial AM50(Mg-5%Al-0.3%Mn) and 0.3 wt%CaO added ECO-AM50 alloys produced by permanent mould casting. The typical microstructure of AM50 alloy was distinctively chara…
The implementation of underground power distribution lines grown significantly over the last decades and this has increased to need to obtain a high level of operational reliability. Current monitoring strategies for underground power lines are developed based on different diagnosis tools and many of them are not chea…
The effects of the low-temperature annealing on Zn-doped indium–tin-oxide (ITO) films such as the electrical, optical and structural properties were investigated. Zn-doped ITO films were fabricated by rf magnetron sputtering of ITO and Al-doped ZnO (AZO) targets on corning glass at room temperature. The content of Zn…
Based on a new molecular structural mechanics model, the effective in-plane mechanical properties of monolayer graphene sheet is analytically analyzed in this paper. The energy equivalence between the basic cell of the atomic structure of graphene and the corresponding basic cell, defined in the homogenization of peri…
Nanoparticles are a special group of materials with unique features and extensive applications in diverse fields. The use of nanoparticles of some metals is a viable solution to stop infectious diseases due to the antimicrobial properties of these nanoparticles. The present work demonstrates the effect of silver nanop…
Silicon based technology has received its technical limitation because of its unstable structure at nano-level. Carbon nanotube as an alternative material has attracted significant scientific efforts. Fabrication of Schottky diode using carbon nanotube is an open area of research to overcome this limit. In this study,…
Glasses with nominal composition (mol%) 34BaO-10Al2O3-17B2O3-34SiO2-(5-x)La2O3-xTiO2 (x = 0, 1, 2, 3, 4) were prepared by melt quenching technique. Activation energy of crystallization (Ea ) was calculated by Kissinger's model considering the shift in peak crystallization temperature (Tc ) at three different heating r…
Poly(aminoester) dendrimers are expected to hold great promise as biodegradable nanocarriers for drug delivery due to their advantageous properties allowing their biodegradability, potentially lower toxicity and possibility of diverse chemical conjugations. The synthetic strategies for constructing such dendrimers inc…
Abstract Mn2O3 particles with enhanced crystallinity were synthesized via a precipitation process in aqueous solution. To study the effects of organic additives on the formation and crystallinity of Mn2O3, cetyltrimethylammonium bromide (CTAB) and tert-butanol (t-butanol) were used as a surfactant and cosurfactant, re…
This paper reports on the determination of the thermoelectric figure of merit ZT of doped polysilicon (poly-Si) thin films. For the extraction of accurate thermal properties, micromachined membrane test structures for the Seebeck coefficient S and the thermal conductivity κ of poly-Si were developed. The electrical re…
A novel application of carbon nanotubes (CNTs) in the field of chromogenic reactions for recognizing aminophenol isomers was described. Among the three of aminophenol isomers, only p-aminophenol could form the chromogenic system. Comparative experiments proved that the absorption of the complex increased by 23.9% in t…
The effect of the molecular structure of liquid crystals on their mesomorphic and physico-chemical properties is studied. The unique compounds described in this work contain three or four phenyl rings. Modifications of the molecules via bridge fragments or via lateral substituents allowed the preparation and optimizat…
The basic physics of the acoustic method of free vibration during revealing of zones of distortion of joints between elements of multilayer structures with layers with a high attenuation rate of elastic vibrations and low elastic modulus are reviewed. The results of experimental surveys of the spectral structure of im…
Some minerals are colloidal and show no X-ray diffraction patterns. Vibrational spectroscopy offers one of the few methods for the assessment of the structure of these types of minerals. Among this group of minerals is kemmlitzite (Sr,Ce)Al3(AsO4)(SO4)(OH)6. The objective of this research is to determine the molecular…
The MnS-La 2 S 3 phase diagram has been constructed where the incongruently melting compound Mn 2 La 6 S 11 is formed. Complex sulfide Mn 2 La 6 S 11 is characterized by monoclinic structure; its incongruent melting temperature is 1535 K. Eutectic coordinates are 31 mol % La 2 S 3 , 1490 K. The extent of the γ-La 2 S…
The changes in Raman spectra of alkali borate glasses with and without Al2O3 under high dose of gamma irradiation have been reported. Glasses with composition xK2O.yAl2O3.(1–x–y)B2O3 (x = 20 or 30 mol%; y = 0, 10 or 15 mol%), have been prepared by melt-quenching technique. In order to investigate the role of Al2O3 in…